Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ostwald ripening inhibition in chemical formulations

a technology of chemical formulation and ostwald, which is applied in the direction of plant growth regulator, biocide, animal husbandry, etc., can solve the problems of physical instability, odor problems and/or volatility, and inability to dissolve water insoluble active ingredients into aqueous scs,

Pending Publication Date: 2009-12-31
INDORAMA VENTURES OXIDES LLC
View PDF19 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0053]Results of storage tests of Examples 12-14 above. No crystal growth could be observed by optical microscope in any of the formulations that have more than one active ingredient (Examples 12-14) above after 8 weeks of ambient-temperature storage, demonstrating the effectiveness of the invention at controlling Ostwald ripening.

Problems solved by technology

A drawback to conventional formulation technology is that only water insoluble active ingredients may be formulated into aqueous SCs.
Drawbacks to such formulations include the use of solvent, odor problems and / or volatility in the field.
A major drawback of formulating a slightly water soluble ingredient as an aqueous SC is Ostwald ripening, which refers to instances in which the larger crystals of the ingredient grow while the smaller crystals dissolve.
Physical instability is one manifestation of Ostwald ripening.
Further drawbacks to Ostwald ripening include limited utility of the formulation because an acceptable shelf-life may not be obtained.
Also, crystals that grow too large may plug spray equipment and may not stay suspended in the spray tank or concentrated formulation.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ostwald ripening inhibition in chemical formulations
  • Ostwald ripening inhibition in chemical formulations

Examples

Experimental program
Comparison scheme
Effect test

example 10

[0042] Preparation of phenoxy acid SC, 8590-5B. First, a solution of polymeric dispersant 8590-4A, 12 grams, sodium allcylbenzene sulfonate, 3.75 grams, propylene glycol, 15 grams, and water, 119.25 grams was prepared. To this solution was added 2,4-D acid, 150 grams. This slurry was milled for 6 minutes at 2500 rpm to give a final median particle size of about four microns using an Eiger mini-100 media mill will 1.0 mm glass media. To 250 grams of this suspension was added 28 grams of a stabilizer premix prepared from one part Xanthan gum, one part PROXEL® GXL preservative, and 98 parts water. The sample was stored at room temperature for 57 days, then observed by optical microscopy for signs of Ostwald ripening, but no crystal growth was found.

[0043]Example 11: Further example of the use of an alternating copolymer to prepare a phenoxy acid SC. To a solution made from sodium allylbenzene sulfonate, 3 grams, propylene glycol, 12 grams, water, 105 grams, and SMA® 1000 MA resin, 15 g...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Massaaaaaaaaaa
Massaaaaaaaaaa
Fractionaaaaaaaaaa
Login to View More

Abstract

A formulation having a slightly water soluble ingredient and method for preparing the same are disclosed. The millbase formulation comprises a slightly water soluble ingredient and a dispersant comprising a water soluble or water dispersible, derivative of an alternating copolymer or a salt thereof. The alternating copolymer comprises a residue of a first comonomer and a residue of a second comonomer. In addition, the first comonomer comprises an α,β-unsaturated oxyacid, or an anhydride or other derivative thereof. Moreover, the second comonomer comprises an olefinic compound containing one or more polymerizable double bonds, or a derivative thereof. Such formulations may be used to inhibit Ostwald ripening in agricultural as well as non-agricultural applications.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This Application claims priority to U.S. Provisional application Ser. No. 60 / 826,685 filed Sep. 22, 2006.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]Not applicable.BACKGROUND OF THE INVENTION[0003]1. Field of the Invention[0004]This invention relates to the field of chemical formulations and more specifically to the field of a stable chemical formulations comprising a slightly water soluble ingredient.[0005]2. Background of the Invention[0006]Formulations include ingredients that are typically water insoluble. Therefore, to create a dispersed formulation, the ingredients are conventionally suspended as a solid in water or another liquid. In agricultural applications, ingredients are typically provided in the forms of a suspension concentrate (SC), a wettable powder (WP), or a water dispersible granule (WG). Dispersants are conventionally used to facilitate dispersion of ingredients into a liquid. Conventional disp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A01N31/08A01P13/00C09K23/52
CPCA01N25/04A01N25/30A01N39/04A01N37/22A01N43/40A01N57/20A01N2300/00
Inventor STERN, ALAN J.TANN, R. SCOTTELSIK, CURTIS M.
Owner INDORAMA VENTURES OXIDES LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com